We’ve always had access to this API for managing Sponsored Products Ads in SellerCentral. However, we don’t know the trick to accessing ams.amazon.com (vendor) Sponsored Product ads using the API. There’s evidence it’s possible, but it’s not documented anywhere AFAIK.

Hi. Have you had any luck with AMS integration via API. We are an agency and pulling data from Seller Central is no problem as you know. However, we have many clients on AMS and it’s a dead-end! I’m trying to revisit this issue again after several months and hoping something has changed. Thanks.